a bag-I contains 4 cards numbered 1 ,3 ,5 and 7 respectively . another BAG-II to contains here cards number 2,4 and 6 respectively a card is drawn at random from from each bag find the probability of that the sum of two cards drawn is 9
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probability is 3/7
6+3
2+7
5+4
6+3
2+7
5+4
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